There are over one thousand million

There are over one thousand million smokers throughout the world, which is an astonishing number, considering the harm smoking does to your body, which we are all well aware of.

With this in mind, the question "why do people smoke?" is a really complicated one, that is now being explored much more in depth by many of the world's doctors and scientists.

It has only recently been proved that smoking causes lung cancer amongst other serious diseases and that passive smoking is also harmful for those that do not smoke.